Improvement in harvester-rakes



0; GOVOLEY. Harvester-Rake.

No. 205,115. I Patented June 25,1878,

51652; A v Jmnzw; &2 aryz lle obozey, I

' N- PETERS. 'FHOTO-LITHOGRAPRER, WASHINGTON. D. c.

UNITED STATES "PATENT OFFICE.

ORVILLE COOLEY, OF BROOKPORT, NEW YORK, ASSIGNOR TO JOHNSTON HARVES'IERCOMPANY, OF SAME PLACE.

IMPROVEMENT IN HARVESTER-RAKES.

Specification forming part of Letters Patent No. 205,1 75, dated June25, 1878; application filed January 15, 1877.

To all whom it may concern Be it known that I, ORVILLE CooLEY, ofBrockport, in the county of Monroe and State of New York, have inventeda new and Improved Support for the Rake-Cam of a Grain- Harvester 5 andI do hereby declare the following to be a full and exact description ofthe same, reference being had to the accompanying drawings, forming partof this specification, in which-- Figure 1 is a side elevation ofmyirnproved rake-cam support, partly in section. Fig. 2 is an endelevation, also partly in section. Fig. 3 is a plan view, partly insection, showw ing different positions of the support by dotted lines.Fig. 4 is a side elevation of a modified form of the support, partly insection; and Fig. 5 is a plan View of the same, parts being broken away.

Similar letters of reference in the several figures denote the sameparts.

My invention relates to that class of grainharvesters in whichsweep-rakes are employed and guided upon an elevated cam-track; and ithas for its object to adjust the cam-track for the purpose of regulatingthe working position of the rakes without throwing the driving mechanismof the rake-shaft out of line.

To this end the invention consists in the means employed for adaptingthe cam-track and its standard to be turned laterally without changingthe position of the gearing which drives the rakes, as I will nowproceed to describe.

In the accompanying drawings, 0 T represent that part of the machinewhich supports the cam-track and its attachments. cast-metal base-plateresting upon the part 0, and having upturned ends for the support of thestandards 5 s, which carry the cam'track B, said standards beingcountersunk in the outer faces of such upturned ends, as shown.

B is a cast-metal bearing-block, having a central bottom stud, p,stepped in the baseplate, so that the latter can turn freely thereonwhen necessary. It is also formed with a bearing in its upper end toreceive the rake shaft 01 and a lateral bearing for the drivingshaft D.The ends of this bearing-block are cast with holes, through which boltsa a are Pisa passed into the curved slots 0 c of the baseplate, asshown, for the purpose of locking the two together in any requiredposition within the limits of the slots.

The adjustments of the baseplate P and the cam-track will be clearlyunderstood by reference to Fig. 3. In this figure the full lines showthe position of the base-plate for holding the cam-track so that therakes shall descend into the grain with reference to the line of out atabout the dotted line F, while the dotted lines of the base-plate showthe position it occupies for setting the cam to carry the rakes into thegrain substantially at the dotted line G. The rakes, of course, arelifted from the platform at a point relatively earlier or later,accordingly as they are caused to descend into the grain earlier orlater.

Heretofore, in this class of machines, the standard of the rake-shafthas been forced to turn with the cam-track in adjusting its position,which caused the sprocket-wheel b to be thrown out of line with thedriving-sprocket A, (shown by dotted lines,) and seriously strain orslacken the driving-chain connecting them, as will be readilyappreciated by noting the positions (shown in dotted lines, Fig. 3)which the sprocket-wheel would occupy in such cases. By my inventionthese objections are avoided, because the base-plate can be adjustedwithout changing the position of the bearing-block 13.

Figs. 4 and 5 show a modified form of the base-plate, which, in thiscase, is made in two short angular pieces, P, resting upon plates 0,provided with raised curved ribs a, centering at d, Fig. 5. The outeredges of the baseplates P are made concave, to fit and turn freely uponsuch ribs when adjusted. The plates P are also slotted at c for thepassage of the screw-bolts a into the plates 0, by which means they canbe adjusted to change the position of the cam-track. In thismodification the bearing-block B rests directly upon its support betweenthe plates P, being bolted in place, as shown.

Having thus described my invention, what I claim as new is 1. The camtrack of a grain harvester mounted upon standards 8 s, which are madelaterally adjustable upon the machine by means with upturned ends, towhich the side standards s s of the cam-track are secured, and mountedupon a base-support, so as to be laterally adjustable thereon, under thebearings of the rake-shaft, substantially as described, for the purposespecified.

ORVILLE OOOLEY.

Witnesses G. D. DEUEY, E. B. WHITMOR.

